A true airport concrete slipform paver, the heritage of the CMI SF-6 has set the ride standards for high quality concrete paving on jobs around the world.

Equipped with four tracks, machine frame rigidity and ample power, the SF-6 is easy to operate with exceptional manoeuvrability to maintain a high level of productivity.

  • “MAINLINE CLASS” slipform paver for highway and airport concrete construction.
  • Versatile, high-production four-track design provides superior paving capabilities and performance unmatched in its size and class.



Deep-section, telescoping mainframe is hydraulically adjustable up to 8 ft (2.44 m), providing paving width ranges from 12 ft to 26 ft (3.66 m to 7.92 m), standard. Optional extensions expand paving width to 44 ft (13.4 m).


Dual-range propelling system with variable hydrostatic drives for both forward and reverse. Paving range variable up to 30 fpm (9 mpm). Travel range variable up to 60 fpm (18 mpm).

EDC-controlled track drive and auger drive for finite control of hydrostatic functions.

Tracks are driven hydrostatically through deep-reduction planetary gear reducers at a 257:1 ratio. Posi-Trac® flow divider control limits track slippage. Track length 8.33 ft (2.54 m). D-4 undercarriage components with 18 in (457.2 mm) triple-grouser street shoes. 10 in (254 mm) leg barrels with 42 in (1,066.8mm) vertical stroke.


Standard machine configuration includes six (6) axial piston-type hydrostatic pumps driven by engine-mounted (flex plate coupling) 4-place pump drive gearbox. Pumps included: two (2) 100 cc, pressure-compensated, closed-loop Vibrator Pumps; two (2) 100 cc, EDC-controlled Auger Drive Pumps; one (1) 100 cc, EDC- controlled Track Drive Pump, operating through 4-way Posi-Trac flow control valve; and one (1) open-loop, pressure-compensated L-38 dedicated control-circuit pump. Optional pumps are available for additional vibrators and added attachments.

Water System

Hydraulically driven pump delivers 800 psi (5,512 kPa) water to hose and high-powered nozzle for cleanup and utility use. Onboard water storage capacity is 200 gal (758 L).


HYDRA-MATION® all-hydraulic control system is fully proportional. Pressure-compensated, variable-displacement pump provides hydraulic oil to the direct-acting servo-valve proportional sensors. Individual flow control at sensors for fine-tuning.


Operator selection for automatic or manual mode. Four elevation control sensors with extendible mounting arms. Calibrated scale-adjusting hardware for each sensor. Standard control-system arrangement includes equipment for four-point control (dual stringline), lock-to-grade for automatic reference control of elevation.


Operator selection for automatic or manual mode, forward or reverse. Right-hand or left-hand stringline steering control mounting. Separate operator selection for manual steering in transport mode. Calibrated scale hardware for adjusting sensor position and fine-tuning alignment. Two steering sensors standard. Remote manual steering switch located conveniently at each leg for setup and transport loading.

Operator’s Console

  • Rubber-booted all-weather switches. Locking covers protect critical function controls.
  • EDC-controlled hydrostatic auger drive and track drive for precise operator control. “Joystick” controls for auger and travel.
  • Synchronized sequential master pave and stop control.
  • Central keyed lock-out for electrical system.
  • EMS system at ground level.
  • Selector switches for manual or automatic control of elevation or steering.
  • Roll-top lockable anti-vandalism console cover.
  • Entire console repositions for operation mode or recesses for transport.


Heavy-duty independent subframe supports paving assembly components and provides flexible positioning of paving unit components. Hydraulic system includes quick couplers and electrical cables equipped with cannon-type plug connectors.


18 in (457.2 mm)-diameter, 8 in (203.2 mm) heavy-weld center tube, welded flighting 1 in (25.4 mm)-thick by 10 in (254 mm)-deep helical spiral blades. Auger shaft features self-aligning spherical bearings with sealed lubrication reservoirs.

Right- and left-hand augers are independently driven by variable-displacement hydraulic pumps in combination with fixed-displacement axial-piston hydrostatic motors.

Planetary high-torque reductions provide final drive to H.D. roller chain in oil-bath housing for shockload protection.

EDC uni-lever controls provide control of speed and direction. Right- and left-hand pitched auger sections are flanged and bolted for width adjustment.


Operator-controlled hydraulic strike-off for metering concrete flow to enclosed vibrator and tamper section in front of profile pan. Sections are flanged for quick width changes.


Hydraulic-powered, motor-in-head, concrete internal vibrators are rated to 10,000 vpm at 4 gpm (15 Lpm).

Standard 24 ft (7.32 m) machine includes 20 hydraulic internal vibrators and 20 vibrator circuits. Vertical adjustment is operator-controlled through hydraulically powered parallel linkage lift system.


Hydraulically driven and sectionalized for width adjustment. Hinge points for crowning. Lubricated pins and bushings.

Tamping speed is variable from 0 to 137 strokes per minute from vibrator control panel.

Mechanical adjustment for stroke amplitude provides 1/2-in (12.7 mm), 3/4 in (19.05 mm) or 1 in (25.4 mm) length of stroke.


48in (1.22 m)-long, extrusion-process profile pan is attached to and supported by the subframe. Front and rear crowning stanchions provide support and adjustment for leading edge and trailing edge of profile pan. All components are sectionalized with flange connections for changes in width requirements. Sections available in U.S. dimensions or metric dimensions.


Power folding sideforms are hydraulically actuated to allow backing over previous day’s pavement. Batter angle and front-to-rear taper set by mechanically adjusting the sideforms.


Operator-controlled, with position indicators. Powered by a single hydraulic cylinder and controlled by adjustment made at each of the individual cam-operated crowning stanchions. No special pan sections are required. Tangent, parabolic, multiple-point or inverted crowning may be accomplished. Maximum crown: 6 in (152.4 mm).

Transitional crowning adjustments may be made by the operator during paving operation in spiral curves.


36 in (914.4 mm)-long, integral float-pan finisher provides secondary finishing and minor deviation corrections in concrete surface. Final edge profile is adjusted by independent powered edges (forms) on the float pan.


  • Caterpillar® diesel engine, 450 hp (336 kW) at 2,100 rpm
  • Heavy-duty severe-service augers
  • SALT (sealed and lubricated) tracks Polyurethane track pads
  • Hydraulically powered guillotine track guards Series I modular paving kit
  • Metric dimension paving kit—3.66 to 7.5 m (standard), 13.41 m (optional) Right- and left-hand curbforms, integral or outboard
  • Hydraulic curbform block-off
  • Outboard paving extensions
  • Zero-clearance paving for widths to 14 ft (4.27 m)
  • Rear-mounted, magazine-load tie-bar inserter; computer control for up to 3 units Side tie-bar inserter for various style tie bars
  • Combination power-folding, guillotine sectional sideforms
  • Paving unit extensions in U.S. or metric dimensions
  • Propelling unit extensions: 6 ft (1.83 m) and 7 ft (2.13 m). Special extension availabl
  • Additional vibrators and controls; long eccentric, high-energy vibrators
  • Dowel Bar Inserter (DBI) System
  • 54 in (1.37 m) float pan with tow bars
  • Computer-controlled crowning
  • Multiple crowning points—centerline plus inside and outside shoulder breaks
  • Oscillating float finisher with automatic microprocessor controls
  • Tamper bar dual drive for wide-width paving
  • Auxiliary hydraulic supply pump (for rear-mounted attachments)
  • Auxiliary water system (for use with burlap drag)
  • Auxiliary hydraulic oil cooler (special application)
  • Hydraulic-powered 4-corner outrigger system with removable pads
  • Metal keyway former, right- and left-hand side
  • Adjacent-slab paving attachment
  • Adjacent-slab steering attachment


paving dimensions
paving width ft / ins 12’ to 24’
mm 3,658 to 7,320
paving width with optional extensions ft / ins up to 44’
mm up to 13410
overall paving length ft / ins 32’ 3”
mm 9,830
wheelbase paving length ft / ins 23’ 10”
mm 7,260
paving depth ft / ins up to 18”
mm up to 457
height + paving depth ft / ins 12’ 8”
mm 3,860
transport dimensions
shipping WIDTH less paving assembly ft / ins 10’ 2”
mm 3,100
track footprint loading width ft / ins 7’ 6”
mm 2,280
shipping Height ft / ins 10’ 6”
mm 3,200
basic tractor without paving kit lbs 75,000
kgs 34,019
paver - series i paving kit / 32” (813mm) float pan lbs 110,000
kgs 49,896
paver - series ii paving kit / 36” (914mm) float pan lbs 115,000
kgs 52,164
MODEL   CAT Diesel
POWER @ 2,100rpm hp 425
kW 317
capacity in³ 893
L 14.6
hydraulic power
Pump drive 4-port
No. of pumps 6
tracks & Legs
track width ft / ins 18”
mm 457.2
track length ft / ins 8’ 4”
mm 2,540
operating SPEED RANGE ft/min 0 - 30
m/min 0 - 9
m/min 0 - 18
fluid capacity
fuel tank gal 185
L 700
HYDRAULIC oil tank gal 63
L 238
HYDRAULIC replenishing gal 10
L 38
engine oil gal 9
L 34
engine coolant gal 22
L 83
aux water supply gal 200
L 757



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